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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 1, Iss. 8 — Dec. 1, 2011
  • pp: 1447–1456

Multi-watt laser operation and laser parameters of Ho-doped Lu2O3 at 2.12 μm

Philipp Koopmann, Samir Lamrini, Karsten Scholle, Michael Schäfer, Peter Fuhrberg, and Günter Huber  »View Author Affiliations


Optical Materials Express, Vol. 1, Issue 8, pp. 1447-1456 (2011)
http://dx.doi.org/10.1364/OME.1.001447


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Abstract

We present spectroscopic investigations and the first laser operation of Ho:Lu2O3. Laser operation was obtained with two different setups at room temperature: In a 1.9 μm diode pumped setup a maximum output power of 15 W was achieved. With a Tm-fiber laser pumped setup the maximum output power was 5.2 W and the slope efficiency was 54% with respect to the absorbed pump power. Absorption measurements revealed absorption cross sections of up to 11.7 · 10−21 cm2 at 1928 nm. In the 2.1 μm range a maximum emission cross section of 4.5 · 10−21 cm2 at 2124 nm was determined, which remains the highest gain peak even for high inversions. The fluorescence lifetime of the 5I7-manifold was found to be 10 ms.

© 2011 OSA

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Laser Materials

History
Original Manuscript: September 22, 2011
Revised Manuscript: October 21, 2011
Manuscript Accepted: October 25, 2011
Published: November 3, 2011

Citation
Philipp Koopmann, Samir Lamrini, Karsten Scholle, Michael Schäfer, Peter Fuhrberg, and Günter Huber, "Multi-watt laser operation and laser parameters of Ho-doped Lu2O3 at 2.12 μm," Opt. Mater. Express 1, 1447-1456 (2011)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-1-8-1447


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References

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